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  <title>Adds new attribute node to element</title>
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  <div id="layout-content"><div id="domelement.setattributenode" class="refentry">
 <div class="refnamediv">
  <h1 class="refname">DOMElement::setAttributeNode</h1>
  <p class="verinfo">(PHP 5, PHP 7, PHP 8)</p><p class="refpurpose"><span class="refname">DOMElement::setAttributeNode</span> &mdash; <span class="dc-title">Adds new attribute node to element</span></p>

 </div>
 <div class="refsect1 description" id="refsect1-domelement.setattributenode-description">
  <h3 class="title">说明</h3>
  <div class="methodsynopsis dc-description">
   <span class="modifier">public</span> <span class="methodname"><strong>DOMElement::setAttributeNode</strong></span>(<span class="methodparam"><span class="type"><a href="class.domattr.html" class="type DOMAttr">DOMAttr</a></span> <code class="parameter">$attr</code></span>): <span class="type"><span class="type"><a href="class.domattr.html" class="type DOMAttr">DOMAttr</a></span>|<span class="type">null</span>|<span class="type"><span class="type false">false</span></span></span></div>

  <p class="para rdfs-comment">
   Adds new attribute node <code class="parameter">attr</code> to element. 
  </p>
 </div>

 <div class="refsect1 parameters" id="refsect1-domelement.setattributenode-parameters">
  <h3 class="title">参数</h3>
  <p class="para">
   <dl>
    
     <dt>
<code class="parameter">attr</code></dt>

     <dd>

      <p class="para">
       The attribute node.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 returnvalues" id="refsect1-domelement.setattributenode-returnvalues">
  <h3 class="title">返回值</h3>
  <p class="para">
   Returns old node if the attribute has been replaced or <strong><code>null</code></strong>.
  </p>
 </div>

 <div class="refsect1 errors" id="refsect1-domelement.setattributenode-errors">
  <h3 class="title">错误／异常</h3>
  <p class="para">
   <dl>
    
     <dt>
<strong><code>DOM_NO_MODIFICATION_ALLOWED_ERR</code></strong></dt>

     <dd>

      <p class="para">
       Raised if the node is readonly.
      </p>
     </dd>

    
   </dl>

  </p>
 </div>

 <div class="refsect1 seealso" id="refsect1-domelement.setattributenode-seealso">
  <h3 class="title">参见</h3>
  <p class="para">
   <ul class="simplelist">
    <li class="member"><span class="methodname"><a href="domelement.hasattribute.html" class="methodname" rel="rdfs-seeAlso">DOMElement::hasAttribute()</a> - Checks to see if attribute exists</span></li>
    <li class="member"><span class="methodname"><a href="domelement.getattributenode.html" class="methodname" rel="rdfs-seeAlso">DOMElement::getAttributeNode()</a> - Returns attribute node</span></li>
    <li class="member"><span class="methodname"><a href="domelement.removeattributenode.html" class="methodname" rel="rdfs-seeAlso">DOMElement::removeAttributeNode()</a> - Removes attribute</span></li>
   </ul>
  </p>
 </div>

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